The influence of weaning age and biocholine supplementation to post-weaning growth and puberty in Brangus heifers

This experiment was conducted to determine the effect of earlier weaning in addition to biocholine supplementation on age at puberty of Brangus heifers. Brangus calves were randomized and divided into three weaning ages groups, at 30 (Hyper-early weaning; HW), 75 (Early weaning; EW) and 180 days (Co...

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Published in:Research in veterinary science 2022-12, Vol.152, p.107-114
Main Authors: de Lima, Vanessa, Pereira, Gabriel Ribas, da Rocha, Marcela Kuczynski, de Oliveira, Tamara Esteves, Fagundes, Helena Xavier, Lima, Julia Abud, Barcellos, Júlio Otávio Jardim
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Language:English
Subjects:
Age
Animals
Beef heifers
Body weight
Brangus
Calves
Cattle
Corpus luteum
Diet
estrus
Evaluation
Feeds
heifers
Lolium
Ovulation
Pasture
pastures
Puberty
Supplements
Thorax
ultrasonography
Veterinary medicine
Vitamin supplementation
Weaning
Weaning age
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container_title Research in veterinary science
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creator de Lima, Vanessa
Pereira, Gabriel Ribas
da Rocha, Marcela Kuczynski
de Oliveira, Tamara Esteves
Fagundes, Helena Xavier
Lima, Julia Abud
Barcellos, Júlio Otávio Jardim
description This experiment was conducted to determine the effect of earlier weaning in addition to biocholine supplementation on age at puberty of Brangus heifers. Brangus calves were randomized and divided into three weaning ages groups, at 30 (Hyper-early weaning; HW), 75 (Early weaning; EW) and 180 days (Conventional weaning; CW). Then, calves were supplemented using the additive Biocholine (BIO) or not (CON). Animals were subjected to puberty induction and the presence of estrus was observed for 7 days. In addition, transrectal ultrasonography was performed to assess the ovarian activity and the presence of corpus luteum to determine heifer puberty. We also evaluated the body weight (BW; Kg), hip height (HH; cm), thoracic perimeter (TP; cm) and BW:HH ratio during the experimental period. BIO group showed higher ADG (>226 g/day) when the animals were exposed to ryegrass pasture compared to CON (P 
doi_str_mv 10.1016/j.rvsc.2022.07.027
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Brangus calves were randomized and divided into three weaning ages groups, at 30 (Hyper-early weaning; HW), 75 (Early weaning; EW) and 180 days (Conventional weaning; CW). Then, calves were supplemented using the additive Biocholine (BIO) or not (CON). Animals were subjected to puberty induction and the presence of estrus was observed for 7 days. In addition, transrectal ultrasonography was performed to assess the ovarian activity and the presence of corpus luteum to determine heifer puberty. We also evaluated the body weight (BW; Kg), hip height (HH; cm), thoracic perimeter (TP; cm) and BW:HH ratio during the experimental period. BIO group showed higher ADG (&gt;226 g/day) when the animals were exposed to ryegrass pasture compared to CON (P &lt; 0.05). We observed an interaction between weaning x biocholine and CW-BIO heifers showed greater HH more compared to CW-CON (P &lt; 0.05). Overall, animals that have reached puberty at day 8 after puberty induction showed 331.0 ± 5.04 kg BW, 122.0 ± 0.56 cm HH and 165.4 ± 0.75 cm TP and 2.7 ± 0.03 BW:HH. At the time of ovulation detection, the heifers from the HW group had 32.1 kg BW, 3.93 cm HH and 0.18 cm BW:HH greater compared to CW (P &lt; 0.05). The BIO supplementation together with ryegrass pasture, led to an increase in ADG weight throughout the evaluated period. We concluded that HW heifers showed an adequate body development throughout the experimental period until puberty appearance at the same age as others weaned groups. •Animals supplemented with biocholine submitted to ryegrass pasture improved ADG weight.•Hyper-earlier weaning had a greater ovulation rate compared to conventional weaning heifers.•Hyper-earlier weaning showed an adequate body development until puberty appearance.•Nutritional strategies decrease the negative impact of weaning in beef cattle.</description><identifier>ISSN: 0034-5288</identifier><identifier>EISSN: 1532-2661</identifier><identifier>DOI: 10.1016/j.rvsc.2022.07.027</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Age ; Animals ; Beef heifers ; Body weight ; Brangus ; Calves ; Cattle ; Corpus luteum ; Diet ; estrus ; Evaluation ; Feeds ; heifers ; Lolium ; Ovulation ; Pasture ; pastures ; Puberty ; Supplements ; Thorax ; ultrasonography ; Veterinary medicine ; Vitamin supplementation ; Weaning ; Weaning age</subject><ispartof>Research in veterinary science, 2022-12, Vol.152, p.107-114</ispartof><rights>2022 Elsevier Ltd</rights><rights>2022. 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Overall, animals that have reached puberty at day 8 after puberty induction showed 331.0 ± 5.04 kg BW, 122.0 ± 0.56 cm HH and 165.4 ± 0.75 cm TP and 2.7 ± 0.03 BW:HH. At the time of ovulation detection, the heifers from the HW group had 32.1 kg BW, 3.93 cm HH and 0.18 cm BW:HH greater compared to CW (P &lt; 0.05). The BIO supplementation together with ryegrass pasture, led to an increase in ADG weight throughout the evaluated period. 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Brangus calves were randomized and divided into three weaning ages groups, at 30 (Hyper-early weaning; HW), 75 (Early weaning; EW) and 180 days (Conventional weaning; CW). Then, calves were supplemented using the additive Biocholine (BIO) or not (CON). Animals were subjected to puberty induction and the presence of estrus was observed for 7 days. In addition, transrectal ultrasonography was performed to assess the ovarian activity and the presence of corpus luteum to determine heifer puberty. We also evaluated the body weight (BW; Kg), hip height (HH; cm), thoracic perimeter (TP; cm) and BW:HH ratio during the experimental period. BIO group showed higher ADG (&gt;226 g/day) when the animals were exposed to ryegrass pasture compared to CON (P &lt; 0.05). We observed an interaction between weaning x biocholine and CW-BIO heifers showed greater HH more compared to CW-CON (P &lt; 0.05). 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We concluded that HW heifers showed an adequate body development throughout the experimental period until puberty appearance at the same age as others weaned groups. •Animals supplemented with biocholine submitted to ryegrass pasture improved ADG weight.•Hyper-earlier weaning had a greater ovulation rate compared to conventional weaning heifers.•Hyper-earlier weaning showed an adequate body development until puberty appearance.•Nutritional strategies decrease the negative impact of weaning in beef cattle.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.rvsc.2022.07.027</doi><tpages>8</tpages></addata></record>
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subjects Age
Animals
Beef heifers
Body weight
Brangus
Calves
Cattle
Corpus luteum
Diet
estrus
Evaluation
Feeds
heifers
Lolium
Ovulation
Pasture
pastures
Puberty
Supplements
Thorax
ultrasonography
Veterinary medicine
Vitamin supplementation
Weaning
Weaning age
title The influence of weaning age and biocholine supplementation to post-weaning growth and puberty in Brangus heifers
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