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Offspring sex ratio in domestic goats: Trivers-Willard out of natural selection
maternal age parental investment sex allocation
2015/7/7
In the present
study we have analyzed an extensive data set on the secondary sex ratio (SSR) including 59 335 goat kids born
in 30 633 litters to 11 644 mothers on farms all over the Czech Republi...
Estimation of the optimal ratio of standardized ileal digestible tryptophan to lysine for finishing barrows fed low protein diets supplemented with crystalline amino acids
tryptophan requirement pig performance
2015/7/3
Optimum standardized ileal digestible (SID) tryptophan (Trp) to lysine (Lys) ratio was estimated for 67–96 kg barrows fed low protein diets supplemented with crystalline amino acids (AA). One hundred ...
Analyses of genetic relationships between linear type traits, fat-to-protein ratio, milk production traits, and somatic cell count in first-parity Czech Holstein cows
Holstein cattle genetic parameters milk yield somatic cell score
2015/7/2
Genetic and phenotypic correlations between production traits, selected linear type traits, and somatic cell score were estimated. The results could be useful for breeding programs involving Czech Hol...
Effects of Forage:Concentrate Ratio on Growth Performance, Ruminal Fermentation and Blood Metabolites in Housing-feeding Yaks
Concentrate Ratio Growth Performance Ruminal Fermentation Yak
2016/5/19
The objective of this study was to determine the effect of forage: concentrate ratio (F:C) on growth performance, ruminal fermentation and blood metabolites of housing-feeding yaks. Thirty-two Maiwa m...
Effect of the Ratio of Non-fibrous Carbohydrates to Neutral Detergent Fiber and Protein Structure on Intake, Digestibility, Rumen Fermentation, and Nitrogen Metabolism in Lambs
Neutral Detergent Fibre Undegraded Dietary Protein Metabolisable N Lambs
2016/5/19
This study aimed to investigate the effect of the ratio of non-fibrous carbohydrates to neutral detergent fibre (NFC/NDF) and undegraded dietary protein (UDP) on rumen fermentation and nitrogen metabo...
Effects of Substrate to Inoculum Ratio on the Biochemical Methane Potential of Piggery Slaughterhouse Wastes
Biochemical Methane Potential Piggery Slaughterhouse Waste Anaerobic Digestion
2016/5/16
The aim of this study was to assess the effect of substrate to inoculum ratio (S/I ratio) on the biochemical methane potential (BMP) and anaerobic biodegradability (Ddeg) of different piggery slaughte...
Effects of Benzoic Acid and Dietary Calcium:Phosphorus Ratio on Performance and Mineral Metabolism of Weanling Pigs
Benzoic Acid Calcium Bone Characteristics Pig
2016/5/16
In a 2×2 factorial experiment the hypotheses tested were that the metabolic acid load caused by benzoic acid (BA) added to the feed affects bone mineralization of weanling pigs, and that a wide dietar...
Estimation of the Optimal Ratio of Standardized Ileal Digestible Threonine to Lysine for Finishing Barrows Fed Low Crude Protein Diets
Threonine to Lysine Ratio Standardized Ileal Digestible Performance Low Crude Protein Pigs
2016/5/12
Two experiments were conducted to determine the standardized ileal digestible (SID) lysine (Lys) requirement and the ideal SID threonine (Thr) to Lys ratio for finishing barrows. In Exp. 1, 120 barrow...
The Limiting Sequence and Proper Ratio of Lysine, Methionine and Threonine for Calves Fed Milk Replacers Containing Soy Protein*
Limiting Amino Acid Milk Replacers Calf Soy Protein
2016/5/9
The limiting sequence and relative ratio of lysine (Lys), methionine (Met), and threonine (Thr) for calves about 2 mo of age fed milk replacers (MR) containing soy protein are not clearly defined. The...
Effect of Aflatoxin on Feed Conversion Ratio in Broilers: A Meta-analysis
Aflatoxin Feed Conversion Ratio Broilers Meta-analysis
2016/5/9
Aflatoxins are natural contaminants of poultry feeds and feed ingredients and cause liver damage, immunosuppression, reduction in performance and mortality in broilers. A number of studies have been c...
Influence of Dietary Conjugated Linoleic Acid and Its Combination with Flaxseed Oil or Fish Oil on Saturated Fatty Acid and n-3 to n-6 Fatty Acid Ratio in Broiler Chicken Meat
Broiler Chicken Conjugated Linoleic Acid Fish Oil Flaxseed Oil Omega Fatty Acid
2016/5/6
This study examined the effect of CLA, flaxseed oil and fish oil and their combination forms on crude fat of liver and fatty acid profiles of liver, breast and thigh meat in broiler chicks. A total of...
Effects of Reduced- Protein Diets at Constant Total Sulfur Amino Acids：Lysine Ratio on Pullet Development and Subsequent Laying Hen Performance
Laying hen lysine methionine protein pullet
2009/1/20
The effect of using a low protein regime in pullet development and subsequent layer performance was studied. The experiment consisted of two periods of rearing and laying. Two hundred and sixty Hy-lin...
Effect of Lowering Dietary Protein with Constant Energy to Protein Ratio on Growth, Body Composition and Nutrient Utilization of Broiler Chicks
Broiler Chick Low Protein Diet Energy:Protein Ratio Growth Performance Nutrient Utilization Whole Body Composition
2016/4/28
A trial was conducted to determine the effect of low crude protein (CP) diets with constant metabolizable energy to crude protein (ME:CP) ratio on growth, body composition and nutrient utilization of ...
Influence of Varying Ruminally Degradable to Undegradable Protein Ratio on Nutrient Intake, Milk Yield, Nitrogen Balance, Conception Rate and Days Open in Early Lactating Nili-Ravi Buffaloes (Bubalus bubalis)
RUP:RDP Milk Yield Nitrogen Balance Buffaloes
2016/4/28
Twenty four early lactating Nili-Ravi buffaloes, eight in each group, were used in a Randomized Complete Block Design to evaluate the influence of varying ruminally degradable protein (RDP) to ruminal...
Effects of Dietary Energy Concentration and Lysine on the Digestible Energy Ratio for Apparent Amino Acid Digestibility in Finishing Barrows
Barrows Lysine:DE Ratio Amino Acid Digestibility Urinary Nitrogen
2016/4/27
This experiment was performed to investigate the effects of two energy levels and four lysine:digestible energy (DE) ratios on the apparent digestibility of nutrients in finishing pigs. The experiment...