MS Proposal

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MS Proposal

• Evaluation of beef calf production system, for
  Tizimin, Yucatan Mexico
• Kotaro Baba

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www.cs.unm.edu
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www.tourbymexico.com
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Brief information about Tizimin

• Tizimin is located close to Merida, and Cancun
• No rivers in this region
• Hot and humid climate
• Seasonal differences

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The annual variation of temperature and
precipitation in Yucatan ( Source Magaña, UADY)
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Cows in Tizimin

• Reproduction cows
• Large and Small Ranches
• Mostly crossbreds of Bos tauras and Bos indicus

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Feeding

• Grazing
• -Guinea grass (Panicum maximum)
• -Brizantha (Brachiaria brizantha)
• -Star grass (Cynodon plectostachyus)
• -Taiwan grass (Pennisetum purpureum)

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d
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Supplements for cows, especially in the dry
season and lactation stage

• -Poultry manure
• -Molasses
• -Commercial energy and protein concentrates
  Campi Engorda ganado

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Irrigation

• Pumps from under ground
• The cost of irrigation is expensive.

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The annual variation of temperature and
precipitation in Yucatan ( Source Magaña, UADY)
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Problem Statements

• Nutrition, no grasses during the dry season.
• Irrigation is expensive.

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Improve beef production

• 1.Nutrition concepts
• 2.Ranch management
• 3.Enhancements in reproduction index
• 4.Genetic selection
• Tedeschi, Fox,
  Baker(2003)

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Nutrition, energy balance of cows

• Energy balance of cows
• Nutrition and energy balance are important to
  reproduction (Canfield et al.,1990)
• Energy is the first limitation for production

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Objectives of the thesis

• 1.To evaluate the forage energy availability by
  month of matching of nutrient requirements of
  cows and breeding heifers.
• 2.To develop supplements for beef cows calving
  each month of the year.

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Groups of seasons and cattle

• 1.Seasons
• -first half of the rainy season
• -second half of the rainy season
• -cool windy season
• -dry season
• 2.Groups of animals
• -weaning calves
• -breeding heifers
• -first and second calf cows
• -older cows

• 3.Physiological status of cows
• -Early lactation
• -Late lactation
• -Early dry cows
• -Late dry cows

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Source , Reynoso-Campos et al.,2003
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Source, Reynoso-Campos et al.,2003
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Source, Reynoso-Campos et al.,2003
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The CVDS

• Inputs required
• 1.Estmates of ME (Metabolizable Energy) value of
  forage consumed each month
• 2.Description of cows that calve during each of
  12 months.
• 3.Input information
• -existing data, and assumption

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Source, Tedeschi et al.,2003
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Source,Tedeschi et al.,2003
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Objectives of the thesis

• 2.To develop supplements for beef cows calving
  each month of the year.

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Supplements for cows

• -Poultry manure
• -Molasses
• -Energy concentrates such as Sorghum and Corn
• -Commercial energy and protein concentrates
  Campi Engorda ganado
• - Commercial hay grass
• - Urea
• -Legumes

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The CNCPS

• 1.Inputs required
• -Environmental information
• -Description of cows
• -Forage chemical components information
• 2. Input information
• Existing data and assumptions

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Appropriate supplementation with the CNCPS for
each group

• 1.Seasons
• -first half of the rainy season
• -second half of the rainy season
• -cool windy season
• -dry season
• 2.Groups of animals
• -weaning calves
• -breeding heifers
• -first and second calf cows
• -older cows

• 3.Physiological status of cows
• -Early lactation
• -Late lactation
• -Early dry cows
• -Late dry cows

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Outputs

• 1.To evaluate the forage energy availability by
  month of matching of nutrient requirements of
  cows and breeding heifers.
• 2.To develop supplements for beef cows calving
  each month of the year.

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