Effects of amount of whole cottonseed on intake, digestibility, and physiological responses of dairy cows

In Experiment 1, 27 lactating cows were fed complete rations ad libitum of 0, 15, and 30% whole cottonseed to examine the effects on intake, digestibility, blood gases, and blood metabolites. Dry matter intake declined linearly with increased cottonseed, but because of greater energy density, calcul...

Full description

Saved in:
Bibliographic Details
Published in:Journal of dairy science 1985-09, Vol.68 (9), p.2248-2258
Main Authors: Coppock, C.E, West, J.W, Moya, J.R, Nave, d.H, LaBore, J.M, Thompson, K.G, Rowe, L.D. Jr, Gates, C.E
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animals
Body Temperature - drug effects
BOVIN LAITIER
Carbon Dioxide - blood
Cattle - blood
Cattle - physiology
COTTONSEED
Cottonseed Oil - administration & dosage
Cottonseed Oil - pharmacology
COWS
DAIRY CATTLE
DIGESTIBILIDAD
DIGESTIBILITE
DIGESTIBILITY
FEED INTAKE
Female
FISIOLOGIA
GANADO DE LECHE
GOSSYPIUM
INGESTION DE PIENSO
Intestinal Absorption - drug effects
Lactation - drug effects
Nutritional Requirements
Oxygen - blood
PHYSIOLOGIE
PHYSIOLOGY
Pregnancy
PRISE ALIMENTAIRE (ANIMAUX)
Respiration - drug effects
SEED
SEMENCE
SEMILLAS
VACA
VACHE
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In Experiment 1, 27 lactating cows were fed complete rations ad libitum of 0, 15, and 30% whole cottonseed to examine the effects on intake, digestibility, blood gases, and blood metabolites. Dry matter intake declined linearly with increased cottonseed, but because of greater energy density, calculated net energy for lactation intake was not depressed significantly. Ether extract, crude protein, and calcium digestibility increased with cottonseed in the diet. Respiration rates declined with dry matter intake and increased cottonseed feeding; some blood gases were influenced by cottonseed feeding but not in a detrimental way. No data among 13 blood metabolites indicated effects of gossypol toxicity with 30% whole cottonseed in the diet. In Experiment 2, 24 dry, nonpregnant Holstein cows were offered complete rations ad libitum of 15, 35, and 55% whole cottonseed to measure responses in intake, respiration rates, and blood metabolites. The highest cottonseed diet significantly depressed intake of both dry matter and calculated net energy for lactation. Maximum dry matter from cottonseed eaten by an individual was 8.4 kg/d (average for 1 wk). Respiration rates declined parallel to intake. No evidence for gossypol toxicity was seen among data of 11 metabolites in blood.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(85)81097-3