Using different levels and sources of fats and roughages in feeding goats. 1- effect on productive and reproductive performance
Abstract: This study was conducted to investigate the effect of dry fat supplementation on digestion coefficients, rumen fermentation, some reproductive parameters, some blood components and milk yield, of Damascus goats. Forty five Damascus goats, 3-4 years of age, 57 Kg average body weight (BW) and 2-3 parities were randomly selected and divided into 3 similar groups (15 goats each) with a completely randomized design .The trial started 45 days before kidding and 90 days after kidding. Experimental rations were offered to animals with rate of 0, 3 and 5% dry or protected fat (DF) (based on DM intake). The basal rations composed of concentrate feed mixture (CFM): roughage berseem 3rd cuts+ rice straw (RS) (60:40%)}. Digestibility trial was carried out using nine Damascus bucks with 60 kg average BW. Data showed that higher (P<0.05) digestibility coefficients of DM, OM, EE and NFE than for control. Rumen parameters (pH, total VFA and ammonia-N) were higher in supplemented groups than control. Concentrations of blood plasma total protein, glucose, total lipids and total cholesterol of does were higher in supplemented groups than the control one. Dry fat supplementation had no effect on conception rate but it had effect on litter size and twining rate as well as kids' birth and weaning weight. Milk yield was higher in supplemented groups than control as well as its composition (fat, total solids and solids not fat % ). Generally, it concluded that dry fat supplementation in ration of Damascus goats improved, daily gain, feed efficiency and digestibility as well as higher some traits of reproductive performance.
Keywords: Dry fat, Damascus goats, performance and reproductive parameters, blood, milk yield, digestibility, rumen fermentation
Publication year 2010
Pages 61-80
Availability location معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
serial title Egyptian Journal Nutrition and Feeds
ISSN 1110-6360
Author(s) from ARC
Agris Categories Animal physiology - NutritionAnimal physiology - Reproduction
AGROVOC
TERMS		 Blood. Digestibility. Milk yield. Performance testing. Reproductive performance. Rumen digestion.
Proposed Agrovoc Damascus goats;Dry fat;
Publication Type Journal
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