the κ-casein protein plays a fundamental role in milk production and its composition synthesis in the mammary gland. this protein has an important role in the formation, stabilization, and aggregation of the casein micelles. in this study, we investigated the genetic variability at the exon 4 of the κ-casein gene (also known as csn3) using pcr-sscp analysis and dna sequencing. then a protein se...

Milk yield and composition data from 7 nursing Lusitano mares (450 to 580 kg of body weight and 2 to 9 parities) were used in this study (5 measurements per mare for milk yield and 8 measurements for composition). Wood's lactation model was used to describe milk fat, protein, and lactose lactation curves. Mean values for the concentration of major milk components across the lactation period (18...

Abstract The paper presents the main results of experiment on use high-protein concentrate “Gorlinka” in diets dairy cows and laying hens their productive qualities. It was found that terms indicators nutritional value (protein, fat, nitrogen-free extractives, ash elements), as well amino acid composition mineral substances, studied surpasses traditionally used feeding farm animals birds, oil c...

Heritabilities for milk, fat, and protein yields were estimated from first lactation data used for USDA-Dairy Herd Improvement Association (DHIA) genetic evaluations. Contemporary group assignments and standard deviations within herd-year were determined with the procedure used for national evaluations. Pedigree data were included for animals born since 1970; yield data were included for cows b...

abstract             (co) variance components of milk, fat and protein yield of 11368 first lactation iranian holstein dairy cow were estimated by single trait random regression test-day models and restricted maximum likelihood (reml) method. in this study the homogeneous residual variance was assumed throughout lactation. estimated heritability for 305-day production traits ranged from 0.25 to...

effects of inbreeding coefficient on estimates of genetic parameters, breeding values and genetic trends for production traits (milk, fat and protein yields), reproduction traits (age at the first calving, interval between first insemination to conception, calving interval, interval between calving to first insemination, and calving ease) as well as longevity of holstein cattle in iran were stu...

Although organic agriculture (OA) is praised unequivocally for its environmental and health benefits, potential food security often questioned because of perceived lower yield. Least developed countries (LDCs), which have a high prospect conversion to OA, are underrepresented in the literature related yield impact on regional security. This paper aims assess nutrient (calorie, protein, fat) sup...

Marine coastal fishery often yields a considerable portion of the non-target species and by-catch as trash fish in total catch. Generally, it consists edible inedible species, which are unacceptable for human consumption usually discarded waste. However, has significant potential to use animal feed. The current study was intended determine proximate composition abundant selected landing sites J...

purpose to assess the anthropometric characteristics and dietary intake of the greek national cross-country skiing team. methods thirty-three athletes (10 females aged 20 ± 5 years; 23 males aged 20 ± 6 years old) participated in the study. all athletes were members of the greek national ski team, and they had been selected to take part in the winter olympics, world ski championships, european ...

Hydrogenated fat-embedded calcium gluconate (HFCG), a prebiotic mixture designed to target the hindgut, has improved milk and component yields when supplemented in mid-lactation cows, likely due hindgut health. The objective of this study was evaluate production responses HFCG fed dairy cattle over full lactation. Seventy-four Holstein cows (21 primiparous, 53 multiparous) were used randomized ...