Cheese yield, casein fractions and major components of milk of Saanen and Anglo-Nubian dairy goats

Damián, Juan Pablo; Sacchi, I.; Reginensi, S.; Lima, Daniele de; Bermúdez, Jorge

doi:10.1590/s0102-09352008000600040

Cited by 22 publications

(26 citation statements)

References 14 publications

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“…Factors affecting weights and growth in the present study were reported by Ruvuna et al (1988) in other breeds. Milk production in goats is affected by several factors, including breed and genetic constitution of the animal (Damian et al, 2008), udder morphology (Moatsou et al 2004), parity (Ahuya et al, 2009), feeding and nutrition (Dønnem et al, 2011), litter size (Ahuya et al, 2009), and kidding period (Crepaldi et al, 1999). In the present study, non-genetic factors, such as year of kidding, season of kidding, parity of dam, blood level and type of birth, were considered in the analyses of lactation performance of NL goats.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of growth, milk and manure production in Norwegian dairy goats in one highland of Tanzania 30 years after introduction

Msalya¹,

Sonola²,

Ngoda³

et al. 2017

SA J. An. Sci.

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Dairy goats have been imported into Tanzania since the 1960s to improve the milk production of Small East African (SEA) goats through crossbreeding. The SEA goats have poor genetic potential for milk. Although crossbreeding programmes started in the early 1980s, most were abandoned or failed for a number of reasons, including lack of performance records, which were important for the design and management of breeding programmes for dairy goats. This study was designed to evaluate growth, lactation, and manure yield in Norwegian Landrace (NL) goats in one rural community of Tanzania. Growth was evaluated in 211 goats by birth weight (BW), weaning weight (WW), weight at six (W6M) and nine months (W9M), and average daily gain (ADG). Lactation performance involved lactation milk yield (LMY), lactation length (LL), and dry off days in 251 does. Twenty four additional goats were confined to determine manure production and chemical composition in a different on-station study. The general linear model (GLM) of Statistical Analysis System (SAS) was used in data analysis. Averages for BW, WW, and adult weight (W9M) were 3.27 ± 0.04, 12.79 ± 0.09, and 28.33 ± 0.19 kg, respectively. Average LMY of 322 litres, LL 214.5 days and dry off days of 84 were obtained. Animals with ≥75% NL genetic make-up produced more milk and showed longer LL and higher ADG than those with 50%. For example, BW was 3.38 ± 0.12 kg in 75% NL animals compared with 2.56 ± 0.12 kg in 50%, whereas LMY was 324.09 ± 16.22 and 248.67 ± 16.20, respectively. The amount of manure was 311.8 g and 218 g per day for mature and grower goats, respectively. Nitrogen was the major content, comprising 1.98% of all nutrients in manure. Compared with the early years of introducing NL goats, growth and productivity of milk have increased several fold, indicating that the development of NL goats in Mgeta is positive at the moment. ______________________________________________________________________________________

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Section: Discussionmentioning

confidence: 99%

Evaluation of growth, milk and manure production in Norwegian dairy goats in one highland of Tanzania 30 years after introduction

Msalya¹,

Sonola²,

Ngoda³

et al. 2017

SA J. An. Sci.

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“…Caseins (a s-1, a s-2, b and j) were separated in a single run by a modification of the method used by Visser et al (1991). Caseins were isolated by RP-HPLC with an Apex WP ODS column (7 lm, 4.6 · 250 mm, Jones Chromatography, Mid-Glamorgan, UK) maintained at 46°C (Damiá n et al, 2008). The eluent consisted of a gradient of acetonitrilewater-trifluroacetic acid developed by mixing volume-based solutions of 100-900-1 (solution A) and 900-100-0.7 (solution B) of these compounds respectively.…”

Section: Casein Fraction Determinationmentioning

confidence: 99%

Milk casein and fatty acid fractions in early lactation are affected by nutritional regulation of body condition score at the beginning of the transition period in primiparous and multiparous cows under grazing conditions

Artegoitia

Meikle

Olazábal

et al. 2012

Animal Physiology Nutrition

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The objective was to evaluate the effect of body condition score (BCS) at 30 days before calving (-30 days) induced by a differential nutritional management, parity and week of lactation (WOL) on milk yield and composition, and milk casein and fatty acid composition. Primiparous and multiparous Holstein cows with high BCS (PH, n = 13; MH, n = 9) and low BCS (PL, n = 9; ML = 8) under grazing conditions were sampled at WOL 2 and 8 (before and after peak of lactation). Milk yield was greater in multiparous than in primiparous cows and tended to decrease from WOL 2 to 8 only in ML cows. Milk protein, fat and casein yields were greater in multiparous than in primiparous cows and decreased from WOL 2 to 8. Milk casein concentration in milk protein was greater in MH cows than in ML, PH and PL cows at WOL 2. Milk κ-casein was greater, and β-casein was less in multiparous than in primiparous cows. As lactation progressed, proportion of casein fractions were not altered. Only κ-casein fraction was affected by BCS at -30 days as PL showed a higher concentration than PH. The de novo (4:0-15:1) and mixed-origin fatty acids (16:0-16:1) in milk fat increased, whereas preformed fatty acids (≥17:0) decreased from WOL 2 to 8. Saturated (SAT) fatty acids tended to be greater and monounsaturated fatty acids (MUFA) were less in multiparous than in primiparous cows. High-BCS cows had greater concentrations of polyunsaturated (PUFA), conjugated linoleic acid (CLA) as well as n-6 and n-3 fatty acids in milk fat than low-BCS cows. The results indicate that casein and fatty acid fractions in milk were affected by parity and may be modified by a differential nutritional management during the pre-calving period (BCS at -30 days) in cows under grazing conditions.

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“…Os teores de proteína, lactose e sólidos totais do leite das cabras, se aproximam dos obtidos por Zahraddeen, Butswat, Mbap (2007) para cabras nativas da Nigéria, 3,52; 4,55 e 11,53%, por Rodrigues et al (2007) para cabras Alpinas, 2,95; 4,29 e 11,00%, e por Damián et al (2008) para cabras Anglo-Nubianas, 3,48; 4,53 e 11,17%, respectivamente. Para a ingestão de N, não foi observado efeito (p < 0,05) das dietas contendo feno de leucena ou feno de estilosantes como fonte de proteína (Tabela 5).…”

Section: Resultsunclassified

Diets containing leucaena or estilosantes hay in lactating mixed-breed Anglo-Nubian goats

Câmara

Alves

Filho

et al. 2015

Revista Ciência Agronômica

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RESUMO -Com o intuito de avaliar dietas para cabras Anglo-Nubianas do tipo misto em lactação, foram utilizadas oito cabras com peso médio 37,9 ± 1,72 kg, entre a 2ª e 4ª ordem de lactação, no terço médio da lactação, distribuídas em duplo quadrado latino 4 x 4. A ordenha foi realizada as 7 e 16 h. Os tratamentos consistiram de quatro dietas formuladas com diferentes volumosos (silagem de capim-elefante associada ou não aos fenos de leucena ou de estilosantes) e milho em grão, acrescidas ou não do farelo de soja. A suplementação proteica com fenos de leguminosas ou a associação destes ao farelo de soja não influenciou (p > 0,05) o consumo de matéria seca, fibra em detergente ácido, fibra em detergente neutro e de nutrientes digestíveis totais. A digestibilidade das frações alimentares foi menor (p < 0,05) quando da suplementação proteica exclusiva com feno de leucena. Não houve efeito (p > 0,05) das dietas sobre a produção e composição do leite e nem influência da suplementação sobre o balanço de nitrogênio, N urinário e N no leite. Dietas formuladas com os fenos das leguminosas tropicais leucena e estilosantes, como fontes proteicas, em substituição ao farelo de soja para cabras Anglo-Nubianas do tipo misto aos 60 a 108 dias de lactação não afetam o consumo de matéria seca, a produção e a composição do leite, além de promover balanço de compostos nitrogenados positivo e atender as exigências proteicas. Recomendam-se estudos em longo prazo ou em outras fases do ciclo de produção a fim de validar o uso dessas forrageiras como fonte de proteína em dietas para cabras em lactação. Palavras-chave: Balanço de nitrogênio. Cabras em lactação. Feno de leguminosas.ABSTRACT -In order to evaluate diets for lactating mixed-breed Anglo-Nubian goats, eight goats with an average weight of 37.9 ± 1.72 kg were used. These were in their 2nd to 4th lactation number, in the middle third of the lactating period, and were distributed in a double latin 4 x 4 square. Milking was carried out at 7:00 and 16:00. The treatments consisted of four diets made up of different forages (elephant grass silage, with or without leucaena or estilosantes hay) and maize grains with or without added soybean meal. Protein supplements of leguminous hay, or mixing these with the soybean meal, did not influence (p > 0.05) the intake of dry-matter, acid detergent fibre, neutral detergent fibre or total digestible nutrients. The digestibility of the dietary fractions was lower (p < 0.05) for protein supplement with leucaena hay only. There was no effect (p > 0.05) from the diets on the production and composition of the milk, neither did the supplements influence the balance of nitrogen, urinary N, or N in the milk. For mixed-breed Anglo-Nubian goats at 60 to 108 days of lactation, the diets formulated with hay from the tropical leguminous leucaena or estilosantes as protein sources in place of soybean meal, have no effect on the dry matter intake or the production and composition of the milk, promoting a positive balance of nitrogen compounds and meeting prote...

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Cheese yield, casein fractions and major components of milk of Saanen and Anglo-Nubian dairy goats

Cited by 22 publications

References 14 publications

Evaluation of growth, milk and manure production in Norwegian dairy goats in one highland of Tanzania 30 years after introduction

Evaluation of growth, milk and manure production in Norwegian dairy goats in one highland of Tanzania 30 years after introduction

Milk casein and fatty acid fractions in early lactation are affected by nutritional regulation of body condition score at the beginning of the transition period in primiparous and multiparous cows under grazing conditions

Diets containing leucaena or estilosantes hay in lactating mixed-breed Anglo-Nubian goats

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